1 files changed, 121 insertions, 0 deletions
diff --git a/minimal/main.c b/minimal/main.c
new file mode 100644
index 000000000..a1e94313c
--- /dev/null
+++ b/minimal/main.c
@@ -0,0 +1,121 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "py/nlr.h"
+#include "py/parsehelper.h"
+#include "py/compile.h"
+#include "py/runtime.h"
+#include "py/repl.h"
+#include "py/pfenv.h"
+
+void do_str(const char *src) {
+    mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
+    if (lex == NULL) {
+        return;
+    }
+
+    mp_parse_error_kind_t parse_error_kind;
+    mp_parse_node_t pn = mp_parse(lex, MP_PARSE_SINGLE_INPUT, &parse_error_kind);
+
+    if (pn == MP_PARSE_NODE_NULL) {
+        // parse error
+        mp_parse_show_exception(lex, parse_error_kind);
+        mp_lexer_free(lex);
+        return;
+    }
+
+    // parse okay
+    qstr source_name = lex->source_name;
+    mp_lexer_free(lex);
+    mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, true);
+
+    if (mp_obj_is_exception_instance(module_fun)) {
+        // compile error
+        mp_obj_print_exception(printf_wrapper, NULL, module_fun);
+        return;
+    }
+
+    nlr_buf_t nlr;
+    if (nlr_push(&nlr) == 0) {
+        mp_call_function_0(module_fun);
+        nlr_pop();
+    } else {
+        // uncaught exception
+        mp_obj_print_exception(printf_wrapper, NULL, (mp_obj_t)nlr.ret_val);
+    }
+}
+
+int main(int argc, char **argv) {
+    mp_init();
+    do_str("print('hello world!', list(x+1 for x in range(10)), end='eol\n')");
+    mp_deinit();
+    return 0;
+}
+
+void gc_collect(void) {
+}
+
+mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
+    return NULL;
+}
+
+mp_import_stat_t mp_import_stat(const char *path) {
+    return MP_IMPORT_STAT_NO_EXIST;
+}
+
+mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) {
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
+
+void nlr_jump_fail(void *val) {
+}
+
+void NORETURN __fatal_error(const char *msg) {
+    while (1);
+}
+
+#ifndef NDEBUG
+void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
+    printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
+    __fatal_error("Assertion failed");
+}
+#endif
+
+/*
+int _lseek() {return 0;}
+int _read() {return 0;}
+int _write() {return 0;}
+int _close() {return 0;}
+void _exit(int x) {for(;;){}}
+int _sbrk() {return 0;}
+int _kill() {return 0;}
+int _getpid() {return 0;}
+int _fstat() {return 0;}
+int _isatty() {return 0;}
+*/
+
+void *malloc(size_t n) {return NULL;}
+void *calloc(size_t nmemb, size_t size) {return NULL;}
+void *realloc(void *ptr, size_t size) {return NULL;}
+void free(void *p) {}
+int printf(const char *m, ...) {return 0;}
+void *memcpy(void *dest, const void *src, size_t n) {return NULL;}
+int memcmp(const void *s1, const void *s2, size_t n) {return 0;}
+void *memmove(void *dest, const void *src, size_t n) {return NULL;}
+void *memset(void *s, int c, size_t n) {return NULL;}
+int strcmp(const char *s1, const char* s2) {return 0;}
+int strncmp(const char *s1, const char* s2, size_t n) {return 0;}
+size_t strlen(const char *s) {return 0;}
+char *strcat(char *dest, const char *src) {return NULL;}
+char *strchr(const char *dest, int c) {return NULL;}
+#include <stdarg.h>
+int vprintf(const char *format, va_list ap) {return 0;}
+int vsnprintf(char *str,  size_t  size,  const  char  *format, va_list ap) {return 0;}
+
+#undef putchar
+int putchar(int c) {return 0;}
+int puts(const char *s) {return 0;}
+
+void _start(void) {main(0, NULL);}